JP2507094Y2 - Rocker bearing structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a structure of a rocker bearing for use in mounting a penstock, etc.

[Conventional technology]

A hydraulic pipe is installed as a component of the hydroelectric power plant. The penstock consists of a large diameter penstock and is mainly installed on sloping ground. For this reason, a large amount of water for power generation flows in the hydraulic pressure pipe with a violent force, and the vibration is also violent, so a rocker bearing is used to absorb the vibration.
FIG. 4 is a side view showing an example of a conventional hydraulic line installation state, and FIG. 5 is a sectional view taken along the line EE of FIG. The penstock is a ring girder 3 wound around the outer peripheral surface of the penstock 6,
The ring girder leg 4 and the rocker bearing 5 for fixing the ring girder leg 4 to the bearing base 2 are installed on the bearing base 2 provided on the ground. FIG. 6 is a perspective view showing an example of a conventional rocker bearing, FIG. 7 is a partial sectional side view, and FIG. 8 is a partial sectional front view. 4 to 8
As shown in the figure, the locker bearing 5 is installed on the bearing stand 2. The lower end of the rocker 17 is pivotally attached to the rocker base 8 by a pin 14. The sliding surface of the upper end surface of the rocker 17 is curved in an arc shape with the shaft (pin 14) as the center direction,
A lower end surface of the flat bearing sink 18 and the upper end surface of the rocker 17 are slidably held by a plate 20 described later. A ring girder leg 4 is fixed to the upper end of the bearing shaft 18. A plate 20 is vertically fixed by two bolts 12 on the surface of a protrusion 19 formed on both sides of the upper end of the rocker 17. Bearing shoe
Guide pins 13, 13 are provided horizontally on the surfaces of both side surfaces of 18 and perpendicularly to the surfaces. The upper end of the plate 20 is slidably fitted between the guide pins 13 and 13.

When the bearing sink 18 fixed to the ring girder leg 4 moves in the left and right directions shown by the arrow in FIG. 7 by the vibration of the penstock 6, the rocker 17 moves the guide pin 13 and the plate.
It is guided by 20 and rotates about the pin 14 as an axis, thereby damping the vibration of the penstock 6.

[Problems to be solved by the device]

However, the conventional rocker bearing 5 having the above-mentioned structure
In, the plate 20 is a rocker with only bolts 12
Since it is fixed to 17 and the plate 20 is fitted only by the guide pin 13, the bolt 12 and the guide pin
There was a problem that the components of the rocker bearing such as the bolt 12 and the guide pin 13 were damaged by the concentration of the force on the bolt 13 and applying a force, which is not usually expected, to the bolt 12 and the guide pin 13 beyond a certain value.

Therefore, an object of the present invention is to solve the above-mentioned problems, and it is an object of the present invention to provide a structure of a rocker bearing in which the above-mentioned components are not damaged.

[Means for solving the problem]

This invention proposes a rocker base, a rocker having a lower end pivotally attached to the rocker base, rotatable about the lower end pivotally attached, and a groove notched on both side surfaces of the upper end, and the rocker. A bearing shoe which is slidably held on the both sides of which a vertical groove is cut out, and a lower half portion of which is fitted in the groove which is cut out on both upper end sides of the rocker, A plate for holding the positions of the rocker and the bearing shoe, in which a disc-shaped upper half portion is slidably fitted in a groove cut out on both sides of the bearing shoe. It has a special feature.

Next, the invention will be described with reference to the drawings. First
FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a partial sectional side view, and FIG. 3 is a partial sectional front view. 2 is a sectional view taken along the line AA of FIG. 3, and FIG. 3 is a sectional view taken along the line BB of FIG.

In FIGS. 1 to 3, parts which are substantially the same as or correspond to those in FIGS.
Description is omitted by attaching the same reference numerals as those in FIGS.

As shown in the drawing, a vertical groove 7 is vertically cut out in a protrusion 15 formed on both side surfaces of an upper end of a rocker 9 which constitutes the rocker bearing 1, while a vertical groove 7 is formed on both side surfaces of a bearing trough 10. A vertical groove 16 having a larger width than the vertical groove 7 is vertically cut on the same vertical line as the vertical groove 7. The lower half 11b of the plate 11 is vertically fitted in the vertical groove 7, and the vertical groove 16
The upper half 11a of the plate 11 is slidably fitted therein. The plate 11 has a predetermined thickness and its upper half
11a is formed in a disk shape. . Meanwhile, plate 11
The lower half portion 11b is formed in a rectangular parallelepiped shape having a lateral width narrower than the diameter of the upper half portion 11a by a predetermined distance. Reference numeral 12 is a bolt for fixing the plate 11 to the rocker 9, and 21 is an anchor bolt.

[Action]

When the bearing shoe 10 fixed to the ring girder leg 4 moves in the left and right directions shown by the arrow in FIG. 2 by the vibration of the penstock 6, the rocker 9 has the bearing shoe 10 and the plate 11 in which the vertical groove 16 is cut out. The pin 14 is rotated around the pin 14 by being guided by, and thereby the vibration of the penstock 6 is buffered.

At this time, the lower half portion 11b of the plate 11 is fitted in the vertical groove 7 of the rocker 9, and the upper half portion 11a is in the bearing trough 10.
Since the bolt 12 is fitted in the vertical groove 16 of the conventional rocker bearing, no shearing force is applied to the bolt 12 unlike the conventional rocker bearing, and the bolt 12 is not damaged. Further, since the upper half portion 11a of the plate 11 is formed in a disc shape, the possibility that the plate 11 will be damaged is extremely small, and since the pin is not used as in the conventional case, the durability is sufficient. The shape of the upper half of the plate may be a disc shape of a perfect circle, or an ellipse or the like may be appropriately selected within an applicable range.

[Effect of device]

As described above, according to the structure of the rocker bearing of the present invention, a large force that causes damage to the bolts that fix the plate to the rocker is not applied, and the guide of the rocker does not use pins and the bearing housing Since the vertical groove and the plate are cut out in the above, it is possible to obtain industrially useful effects such as damage to the components of the rocker bearing such as the bolt and the plate being prevented.

[Brief description of drawings]

1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a partial sectional side view, and FIG. 3 is a partial sectional front view.
In the figure, the section of the sectional view is shown by the sectional view taken along the line AA in FIG. 3, and the section of the sectional view in FIG. 3 is shown by the sectional view taken along the line BB in FIG. 2, respectively. FIG. 4 is a side view showing an example of the installed state of the hydraulic conduit, FIG.
E line sectional view, FIG. 6 is a perspective view showing an example of a conventional rocker bearing, FIG. 7 is a partial sectional side view, FIG. 8 is a partial sectional front view, and FIG. The part is C in Fig. 8
8 is a sectional view taken along the line C, and FIG. 8 is a sectional view taken along the line DD in FIG. In the drawings, 1, 5 ... rocker support, 2 ... support base, 3 ... ring girder, 4 ... ring girder leg, 6 ... penstock, 7, 16 ... vertical groove, 8 ... rocker base, 9, 17 ... rocker, 10 , 18 ...
Bearing sink, 11, 20 ... Plate, 12 ... Bolt, 13 ... Guide pin, 14 ... Pin, 15, 19 ... Projection, 21 ... Anchor bolt.

Claims (1)

(57) [Scope of utility model registration request] 1. A rocker base, a rocker having a lower end pivotally mounted on the rocker base, rotatable about the lower end pivotally mounted, and having a groove cut out vertically to both side surfaces of the upper end, and A bearing shoe which is slidably held on the rocker and has grooves cut out on both side surfaces thereof and which is perpendicular to both side surfaces thereof, and a lower half portion of which is fitted into the groove cut out on both side surfaces of the upper end of the rocker, A plate for retaining the positions of the rocker and the bearing shoe, in which a disc-shaped upper half portion is slidably fitted in a groove cut out on both side surfaces of the bearing shoe. The structure of the rocker bearing is characterized by consisting of.